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Finding the Fourth Proportional to 103,791.15, 155,608.29 and 43,838.19

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Solution

The fourth proportional to 103,791.15, 155,608.29 and 43,838.19 is: 65,724.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,791.15 : 155,608.29 = 43,838.19 : x
  2. Step 2: Convert to fraction form
    103,791.15/155,608.29 = 43,838.19/x
  3. Step 3: Cross multiply
    103,791.15x = 155,608.29 × 43,838.19
  4. Step 4: Simplify right side
    103,791.15x = 6,821,585,782.60
  5. Step 5: Solve for x
    x = 6,821,585,782.60/103,791.15
  6. Step 6: Final answer
    x = 65,724.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.